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rpmsg: glink: Do not send to remote proc in reset

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If an intent is available and there is space in the fifo, glink sends
the message and returns success even when the remote proc is in reset.
This causes request/response type drivers to wait for a response from
a remote proc in reset which can delay cleanup. Return an error on send
if the remote proc is in reset.

Change-Id: Ic49aa5e545d871387b8ebd74ad2828ca2140645b
Signed-off-by: Chris Lew <clew@codeaurora.org>
This commit is contained in:
Chris Lew 2018-12-05 16:27:34 -08:00
parent c0f4d1deef
commit 37d78deabf
1 changed files with 3 additions and 0 deletions
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3
drivers/rpmsg/qcom_glink_native.c
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@ -357,6 +357,9 @@ static int qcom_glink_tx(struct qcom_glink *glink,
if (tlen >= glink->tx_pipe->length)
return -EINVAL;
if (atomic_read(&glink->in_reset))
return -ECONNRESET;
spin_lock_irqsave(&glink->tx_lock, flags);
while (qcom_glink_tx_avail(glink) < tlen) {